Home > Do Mathematics -> K-7 Algebra and Functions -> Linear Functions -> Car Race
Race the cars! - Classroom/Home Simulator (See also: Students Building Simulators - Car Race)
Sample question for Level: Algebra 1 Problem:
Set RED CAR: Speed=15km/h and Start=24km and BLUE CAR: Start=0km.
Question: If the cars meet in 4 hours, what is SPEED of BLUE CAR?
Use the activity to find your answer and then talk about the math. Answer A: Using the activity.
- Set the 3 sliders.
- Think about what it means to "meet in 4 hours".
- Find t=4 on the horizontal axis.
- Move the 4th slider (speed of blue car) until the lines intersect above t=4.
- See that the slider is at 21km/h.
Answer B: Thinking about the math.
- Thinking: blue car has to "catch up" 24 km in 4 hours.
- This means it must go 24km/4h=6km/h faster than red car.
- The speed of red car is 15km/h.
- So the speed of blue car is 15km/h+6km/h=21km/h.
Please write in suggestions for good questions!
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algebra, functions, lines, slopes, cars, distance, speed, time, velocity, dst, geogebra, application, geometry, program
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